A vehicular error detection system is provided, comprising: a plurality of light circuits in a vehicle, each light circuit including a light and being associated with a corresponding unique identifier; a system controller located in the vehicle and configured to control operation of the light circuits; a plurality of wires connecting the light circuits to the system controller such that at least one wire is attached to each of the plurality of light circuits; a plurality of lighting error detectors each configured to detect a malfunctioning light from among corresponding lights in the light circuits, and configured to transmit an error message to the system controller when the malfunctioning light is detected, wherein each of the lighting error detectors transmits an error message to the system controller when the lighting error detector detects the malfunctioning light, and the error message includes the corresponding unique identifier of the malfunctioning light.

A vehicular error detection system is provided, comprising: a plurality of light circuits in a vehicle, each light circuit including a light and being associated with a corresponding unique identifier; a system controller located in the vehicle and configured to control operation of the light circuits; a plurality of wires connecting the light circuits to the system controller such that at least one wire is attached to each of the plurality of light circuits; a plurality of lighting error detectors each configured to detect a malfunctioning light from among corresponding lights in the light circuits, and configured to transmit an error message to the system controller when the malfunctioning light is detected, wherein each of the lighting error detectors transmits an error message to the system controller when the lighting error detector detects the malfunctioning light, and the error message includes the corresponding unique identifier of the malfunctioning light.

A lighting device may include an elongated housing that defines a cavity. The lighting device may include plurality of emitter printed circuit boards configured to be received within the cavity. Each of the plurality of emitter printed circuit boards may include a plurality of emitter modules mounted thereto. Each of the plurality of emitter printed circuit boards may include a control circuit configured to control the plurality of emitter modules mounted to the respective emitter printed circuit board based on receipt of one or more messages. The lighting device may include a total internal reflection lens for each of the plurality of emitter printed circuit boards. The total internal reflection lens may be configured to diffuse light emitted by the emitter modules of the plurality of emitter printed circuit boards.

The invention relates to a luminaire with a light source comprising: a functional unit; a power supply and control unit configured for converting power from a main power source into a power signal for powering the functional unit; wherein the power supply and control unit is configured to generate a power supply failure signal when the power supply from the main power source fails and to communicate the power supply failure signal to the functional unit.

A lighting system is disclosed. The example lighting system includes a printed circuit board. At least one LED circuit and a driver circuit are mounted on the printed circuit board. The at least one LED circuit has a plurality of phosphor coated LEDs. The driver circuit includes at least one bridge rectifier and at least one capacitor. The lighting system also includes a housing including a lens. The lighting system further includes a first power connection lead connected to a first input of the bridge rectifier and a second power connection lead connected to a second input of the bridge rectifier. At least a first portion of each power connection lead is contained within the housing and at least a second portion of each power connection lead extends beyond the housing to enable the printed circuit board to be connected to an AC power source.

A lighting system having multiple light sources is provided, which includes a first light source and a second light source. The first light source includes a first control module, a second memory module, a first lighting-emitting module and a first detection module. The second light source includes a second control module. When the first light source and the second light source are electrically connected to a power source, the first control module and the second control module turn off the first light source and the second light source respectively. The first control module reads the data of the first memory module of the first light source to determine whether the first light source malfunctions, and turns on the first light-emitting module when the first control module determines that the first light source does not malfunction. Then, the first detection module keeps detecting whether the first light source malfunctions.

A lighting system having multiple light sources is provided, which includes a first light source and a second light source. The first light source includes a first control module, a second memory module, a first lighting-emitting module and a first detection module. The second light source includes a second control module. When the first light source and the second light source are electrically connected to a power source, the first control module and the second control module turn off the first light source and the second light source respectively. The first control module reads the data of the first memory module of the first light source to determine whether the first light source malfunctions, and turns on the first light-emitting module when the first control module determines that the first light source does not malfunction. Then, the first detection module keeps detecting whether the first light source malfunctions.

A luminaire which provides illumination (in some cases, in a coordinated manner with other nodes of a lighting network) in an industrial environment is further configured to serve as a node of a wireless process control or industrial network, which may be a mesh and/or time-synchronized wireless network. Upon detecting a loss of mains power and/or other triggering condition, the luminaire node allocates an amount of available battery power to maintain the routing of process control messages, and allocates at least some of a remaining amount of available battery power (if any) for performing lighting activities such as driving illumination and/or lighting-related communications. The allocations for (e.g., the relative priorities of) support for process control and support for lighting activities may be based on an allocation configuration and/or based on instructions received from other components of the process control network and/or the lighting network, which may include user interface devices.

First and second parts of an optical component may be spatially separated and not electrically connected. A passive side may contain an optical element. An active side may contain a light-emitting device. To detect damage to the optical element, passive side circuitry that is associated with the optical element may monitor a fail-safe resistor on the optical element for changes in resistance. The circuitry may use a passive side near-field communications antenna to transmit information such as information on the fail-safe resistor to active side circuitry that is associated with the light-emitting device using near-field communications. The active side circuitry can receive the transmitted information using an active side near-field communications antenna and can adjust the light-emitting device accordingly. The active side circuitry can also monitor the active side near-field communications antenna to detect when the passive side and active side antennas have been moved apart.

First and second parts of an optical component may be spatially separated and not electrically connected. A passive side may contain an optical element. An active side may contain a light-emitting device. To detect damage to the optical element, passive side circuitry that is associated with the optical element may monitor a fail-safe resistor on the optical element for changes in resistance. The circuitry may use a passive side near-field communications antenna to transmit information such as information on the fail-safe resistor to active side circuitry that is associated with the light-emitting device using near-field communications. The active side circuitry can receive the transmitted information using an active side near-field communications antenna and can adjust the light-emitting device accordingly. The active side circuitry can also monitor the active side near-field communications antenna to detect when the passive side and active side antennas have been moved apart.